Landscape context and the biophysical response of rivers to dam removal in the United States

Melissa M Foley, Francis J Magilligan, Christian E Torgersen, Jon J Major, Chauncey W Anderson, Patrick J Connolly, Daniel Wieferich, Patrick B Shafroth, James E Evans, Dana Infante and Laura S Craig

PLOS ONE, 2017, vol. 12, issue 7, 1-24

Abstract: Dams have been a fundamental part of the U.S. national agenda over the past two hundred years. Recently, however, dam removal has emerged as a strategy for addressing aging, obsolete infrastructure and more than 1,100 dams have been removed since the 1970s. However, only 130 of these removals had any ecological or geomorphic assessments, and fewer than half of those included before- and after-removal (BAR) studies. In addition, this growing, but limited collection of dam-removal studies is limited to distinct landscape settings. We conducted a meta-analysis to compare the landscape context of existing and removed dams and assessed the biophysical responses to dam removal for 63 BAR studies. The highest concentration of removed dams was in the Northeast and Upper Midwest, and most have been removed from 3rd and 4th order streams, in low-elevation (

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0180107

DOI: 10.1371/journal.pone.0180107

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